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Theorem dmv 5903
Description: The domain of the universe is the universe. (Contributed by NM, 8-Aug-2003.)
Assertion
Ref Expression
dmv dom V = V

Proof of Theorem dmv
StepHypRef Expression
1 ssv 3932 . 2 dom V ⊆ V
2 dmi 5902 . . 3 dom I = V
3 ssv 3932 . . . 4 I ⊆ V
4 dmss 5883 . . . 4 ( I ⊆ V → dom I ⊆ dom V)
53, 4ax-mp 5 . . 3 dom I ⊆ dom V
62, 5eqsstrri 3955 . 2 V ⊆ dom V
71, 6eqssi 3924 1 dom V = V
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   = wceq 1569  Vcvv 3450   ⊆ wss 3895   I cid 5544  dom cdm 5650
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1827  ax-4 1841  ax-5 1942  ax-6 1999  ax-7 2040  ax-8 2146  ax-9 2154  ax-ext 2732  ax-sep 5248  ax-pr 5390
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1572  df-fal 1582  df-ex 1812  df-sb 2099  df-clab 2739  df-cleq 2752  df-clel 2835  df-ral 3077  df-rex 3087  df-rab 3413  df-v 3452  df-ss 3896  df-dif 4047  df-in 4091  df-un 4151  df-nul 4279  df-if 4482  df-sn 4584  df-pr 4586  df-op 4590  df-br 5103  df-opab 5167  df-id 5545  df-xp 5656  df-rel 5657  df-dm 5660
This theorem is used by:  nowisdomv  31076
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